Echo.java

Here is the actual Java program. It reads characters from the keyboard and creates a String object to contain them. A reference to the object is put in inData. Then it sends the characters from that String to the monitor.

import java.util.Scanner;

class Echo
{
  public static void main (String[] args) 
  {
    String inData;
    Scanner scan = new Scanner( System.in );

    System.out.println("Enter the data:");
    inData = scan.nextLine();

    System.out.println("You entered:" + inData );
  }
}

The line  import java.util.Scanner;  says to use the Scanner class from the package java.util. The java.io package is imported automatically when you import Scanner. Here is a run of the program:

It would be beneficial to your future endeavors if you create a source program, compile, and run it.